[-- ( tail head -- edge )
Graphviz notation » Aliases that resemble DOT code

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Vocabulary
graphviz.notation

Inputs

tail	an object
head	an object

Outputs

edge

an edge

Word description
Shorthand for <edge> to be used with ]; and attribute-setting generic words (see Notation for setting Graphviz attributes) so that undirected graphs read more like graphs in the DOT language.

Examples
Instead of writing

<graph> 1 2 <edge> "red" =color add

it looks better to write

<graph> 1 2 [-- "red" =color ];

Compare this with the DOT language, where you'd write

graph { 1 -- 2 [ color="red" ]; }

See also
[add-node, [add-edge, [->, [node, [edge, [graph, ];

Definition

USING: graphviz ;

IN: graphviz.notation

ALIAS: [-- <edge> inline